Original oil and gas trade magazine vintage ad for TXT Texsteam Corporation. Division of Vapor Heating Corporation, GRAHAM PLUG VALVES, Manufactured by Graham Products, division of Graham-Lemunyon, Inc., Los Angeles, CA. Distributed east of the Rockies by: TXT Texsteam, 320 Hughes St., Houston, TX. On the reverse side is an ad for Worthington Standard Products: Compressors, Multi V Drives, Variable Speed Drives, Pumps. Also is the Reid Vapor Pressure Bombs, Refinery Supply Company. 621 East Fourth Street, Tulsa, OK. 2215 McKinney Avenue, Houston, TX. Central Scientific Company 1700 Irving Park Road, Chicago, IL. Cenco - the most complete line of scientific instruments and laboratory supplies in the world. Unique 1955 old petroleum industry equipment magazine advertisement would look sensational when matted and framed. Nice graphics.